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What is considered the most recent common ancestor of living tetrapods?
Wiki User
∙ 11y ago
a sturdy-finned, shallow-water lobe-fin whose appendages had skeletal supports similar to those of terrestrial vertebrates
A Class of lobe-finned fishes known as Sarcopterygians is believed to have given rise to the amphibians and thence to all other air-breathing vertebrates. There are three main Subclasses -- the Rhipidistii, the Dipnoi, and the Actinistia or Coelocanths. The Rhipidistians are the ones that are ancestral to tetrapods. The oldest known amphibians have been found in rocks of the late Ordovicean Period.
The Dipnoi are today's lung fishes -- the African, Australian, and South American. The African and South American types are similar in many ways and are probably fairly closely related. The Australian is quite different and is the only one of them that is capable of using its gills as well as its lung for gas exchange.
The Coelocanths were thought to be extinct until the late 1930's when one was discovered in the ocean off the east coast of South Africa.
Wiki User
∙ 11y ago
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Which living organism most resemble the common ancestor of all life according to genetic testing?
organisms living deep in the oceans around seafloor volcanic vents and in hot springs
What best describes the theroy of evolution?
It describes via what mechanism modern life forms derived from their common ancestors.
Almost all living organisms use DNA ATP and the same DNA triplet code this is an example of evolution based on what?
Common ancestry. In this case the last universal common ancestor, LUCA.
What are the structurall and biochemical similarities of animalsand all living organisms?
The structural and biochemical similarities among living organisms are best explained by Darwin's conclusion: Living organisms evolved through a gradual modification of earlier forms --- descent from a common ancestor.
Why is it all living things originated from a common or universal ancestor?
Because we can trace the genetic trail back that far and the fossil trail almost back that far. One genetic code shared by all organisms is rather good implicating evidence for universal common ancestor.
Who was it that proposed that all living things came from a common ancestor?
Charles Darwin
Do all living things have a common ancester?
Yes. Go far enough back and we can posit a universal common ancestor.
What is ramaphitecus?
The common ancestor of Homo with the other living Great Apes must be even older.
Are birds most recent common ancestor to dinosaurs?
They are generally considered to be the closest living relatives.
What are clades A clade is a group of organisms consisting of a common ancestor and all its descendants But doesn't every living thing have a common ancestor Please help Thanks?
Yes, all living things are just groups of organisms consisting of common ancestors and all their decendant's. Clades is just a word that means a group of organisms.
Is it rue that humans have not descended from chimpanzees but do have a common ancestor with them?
Yes, that's correct. Humans and chimpanzees share a common ancestor that lived several million years ago. While humans and chimpanzees have diverged along separate evolutionary paths since then, they still share a significant amount of genetic material due to their common ancestry.
What is the name of the first living thing on earth?
There is no particular name for it, since we do not know exactly what that organism was. We do, however, have a general name LUCA, which stands for Last Universal Common Ancestor, meaning the last living thing that was the ancestor of all life on Earth.
What are connected to cheetahs?
The cougar is the closest living relative of the cheetah. They both evolved in North America from a common ancestor.
What is the phenomenon called when the similarity of the characteristics of sheep and reindeer is due to their having a common ancestor?
The similarity of sheep and reindeer is due to parallel evolution. This is when two species have a common ancestor and have developed similar traits, despite living in different areas.
Are puffer fish and sea urchins related to each other?
Yes. Due to evolution, all living things have a common ancestor.
What does evolution theory states?
That each living thing on this earth derives from a single less complex ancestor common to all species
Is a microorganism considered an animal?
Some microorganisms are animals some are not. For example bacteria are not animals but are microscopic while mites can be microscopic but are animals. Microoranism is defined by needing a microscope to see it. Living things are considered animals by virtue of being on a specific branch of the tree of life having a common ancestor.
